Q: Cyclic noise when it runs

asked by on February 10, 2016

My car is making some sort of cyclic noise when it runs.

Cycling noises are common in cars with low refrigerant levels. When the refrigerant is low, the A/C system has a pressure sensor that turns the compressor off to avoid damaging it. Once the pressure gets to a good point again, the compressor turns back on until the pressure sensor turns it back off. The low refrigerant usually means there is a leak. Leaks can be minor or major and the system will need to be refilled to detect it. I suggest seeking help from a qualified mechanic, such as one from YourMechanic to help you determine the cause of the sound and the repairs needed.

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